Web-based Interrogation of a Power Quality Data Acquisition Device

1. Web-based Interrogation of a Power QualityData Acquisition Device

2. DESIGN TEAM: Dr. Mark Halpin Glenn Wilson Team Advisor Debugger Web Page Software Research & Design Jason Koberger True RMS meter Research & Design Hardware Testing & Simulation Melissa Wilson Team Leader True RMS meter Research, Design & Simulation

3. Southern Company is our Co-op employer Need for improved data acquisition device for power applications Motivation

4. Problem • Signal Information is not Readily Available • Remotely • Nonexistent • On-site • Must have computer available

5. Design Constraints • Temperature: 0°-50° C • Display Accuracy: min 1V; increment 1V min 0.1A; increment 0.1A • Tri-State Status Indicator: Good, Marginal & Unacceptable Signal Levels • Update Frequency: once per ½ second • Coordination: LCD display & Port Indicator

6. Design Constraints • Physical Packaging: Physical Constraints of Existing Device • Server: Windows NT IIS • Communication Constraints: A/D Card or RS232 Serial Port • Browser Capability: Netscape & Microsoft • Cost: $50.00

7. Circuit OUR CIRCUIT LAYOUT WILL GO HERE

8. Squared Integrated over 1 period RMS Output Signal Square Root Flow Diagram Incoming Signal

9. Accuracy Results

10. Accuracy Results

11. Cost Comparison Maximum Cost: $50.00 Prototype Cost: $39.59 20% below cost constraint

12. Update Frequency Comparison Update Frequency Data Will Go Here

13. Temperature Constraints Temperature Constraint Data Will Go Here

14. Web Browser Compatability We have verified that the graphics display correctly using the latest versions of both Netscape Navigator and Microsoft Internet Explorer.

15. Hardware/Web Status

16. Future Work • Implement 8-1 Mux to allow switching between 8 ports on the box • Implement Indicator lights for each port • Package Hardware • Perform Real-Time testing on software

17. Questions?

18. References [1] “Home Power Quality,” http://energyoutlet.com/res/powerqual/index.html, Energy Outlet, Iris Communications, Inc, USA, 1996. [2] R. C. Dugan, M. F. McGranaghan, and H. W. Beaty, Electrical Power Systems Quality, McGraw-Hill, New York, New York, USA, p. 1-3, 1996. [3] W. M. Grady and A. H. Noyola, “End User and Electric Utility Perspectives,” Results of Power Quality Surveys in the United States, University of Texas at Austin, Austin, Texas, USA, 1995. [4] C. Peacock, “Interfacing the PC, ” http://www.beyondlogic.org/serial/serial3.htm, USA, February 28, 2000.

19. References [5] T. Cambra, “Developing a Visual Basic Component for IIS/MTS,” http://msdn.microsoft.com/workshop/server/components/vbmtsiis.asp, Microsoft Development Network, USA, June 19, 1998. [6] D. Adair, J. Ball, and M. Pawlan, “Trail: 2D Graphics,” http://web2.java.sun.com/ docs/books/tutorial/2d/index.html, Sun Microsystems, USA. [7] P. Coleman and M. Halpin, “Long Term Monitoring”, 1999 Southeastern Meter School & Conference, pp. 2-3, Birmingham, Alabama, USA, 1999. [8] W. Berry, “COM Objects and ASP,” http://msdn.microsoft.com/workshop/server/ asp/comtutorial.asp, Microsoft Development Network, USA, January 12, 1998.

20. References [9] “LCD Products,” http://www.eio.com/lcdprodt.htm, Electronics Information Online, USA, August 23, 2000. [10] “Newark Electronics” http://www.newark.com, Newark Electronics, USA, 2000. [11] R. Moffat, “ElectronicsCooling”, http://www.electronics-cooling.com/Resources/ECArticles/JAN97/jan97-01.htm, Stanford University, Stanford, California, USA, January 1997. [12] “California Instruments: Programmable AC Power Sources”, http://www.ixpres.com/calinst/acpower.htm, California Instruments, San Diego, California, USA, September 2000.